Dynamometer.



PATENTED FEBe 20, 1906. H. RUDDIO'K, DEUD.

W. H. 111113111011, ADMINISTRATOR. DYNAMOMETER.

PLI T1011 FILED SBP .6,1 AP OA. l T V 905 zsHBMs-SHBBT 1.

No. 813,324. PATENTBD FEB. 20, 1906.

` H. RUDDICK, DECD..

W. H. BUDDICK, ADMINISTRATOR.

DYNAMOMETER.

APPLICATION FILED SEPT.6,1906

' 2 SHETS-SHEET 2.

W HRH/calici? ernten,

v*l/'fl/llllt H. RUDD'IUK, F NEW YURK, N. Y., eDMlNiSTRATOR OF HAMLTN RUfDDl-UK, DEC {lh} preiswertesten..

no. erases.

pecication of Lettera Fatent.

Patented Feb. 20, 1906.y

To4 a/ZZ whom t may concern.-

Beit known that HAMILTON Ruimten, deceased, late a citizen of the United States, and a resident of Brooklyn, in the county of Kings. and State oi New York, did invent certain new and useful Improvements in Dynamorneters, of which the following is aspecication. y

This invention'frelates to dynamometers for re istering the force exerted upon or Work one by a rotating part,such as a shaft.

The object 'of the invention is to provide a device of this character which will not only be accurate in its operation, but which will be constructed of comparatively i'ew and simple parts and which will not be liable to get out oi order.

For afull description of the invention and the' merits 'thereof and. also to acquire a knowledge of the details of construction and the means for eiiecting the result reference is to be had to the following descriptionv and are Figure '1 is a side e evationof the impro-vid dynamometer. Fig. 2 is a transverse section' thereof on the line 2 2 oi Fig. 1. Fig. 3 :isfI a detail viewillustratingy the mechanism for feeding the paper ribbon upon which the record is made, and Fig. l is a detail view illustrating the connection between the stylus carrying armi and its actuating mechanisrnl. f

Corresponding and like parts are referred to in the following description and all une are more or less extended, according to the work being done, or strain exerted, and consequently the relative positions of this stationary arm and the pulley are varied` lt is this variation in-relative position that is the objectof this invention to'visibly record, and to this end my invention comprehends two spools 4 and 5, mounted in suitable bearings, the spool 4 being designed to accommodate a paper-roll and feed the paper 6 therefrom and the spool on it after the record has been made.

5 being designed to have the paper wound up To effect the movement of the paper from one spool to the other, the spool 5 is formed witha gear-iace .7, with which a worm 8 engages. The shaft of the worin 8 is mounted in a bearing carried bythe pulley, and to that end of the shaft opposite the worm is secured a ratchet 9, with which apawl 10 engages. The

pawi l() is carried on a reciprocating rod 11, which latteris mounted in bearings 12 and 13 to move bach and forth longitudinally, and said rod is held, by means of a spring 14, with "its outer end protruding sli htly through the face of the pulley. By t 's means as the pulley rotatesfthe belt will cause the rod to reciprocate and through the instrumentality of the pawl 10 and the ratchet 9 and the worm 8 and gear 7 f will cause the spool 5 to revolve and wind the paper on the saine from the spool 4.

'lt is of course understood that the paper or the record is graduated and ruled in'lines of horsepower, and, as indicated in the drawin s, the paper feeds from one spool to the ot er over the hub oi the pulley, wherebyy there is provided a suitable writing-surface.

This paper as it moves passes across the path oi a stylus 15, which is actuated laterally, ac-l cording to the strain placed upon the pulley, .so as to register by oblique or zigzag lines, as

the case may be, to record the variation in 'the power exerted by the pulley.

flhe stylus 15 is carried in the free end of a holder 16, which is in the form oi' a bar susy pended at its upper end from the inner' face oi the pulley 2, and said bar is designed to-oscillate, as shown. there is provided a connection between the bar or stylus-holder 16, theI stationary ami' 1,'

and some part ol the pulley proper, such asa spoke 17. This connection consists of a bellcranlr 18, carried Aby the said spoke 17, one

arm of said bell-crank being connected by av link 19 with the stationary arm 1 and the other arm of said bell-crank being connected by link 20 with the stylus-holder 16. The two links 19 and 2O are preferably connected to their respective parts by ball-and-socket joints.

ln the operation ci the device it will be assumed that the shaft carrying the arm 1 and To effect this oscillation,

log'

the pulley 2 is in rotation and that force is.be ing exerted upon the pulley. As the prol truding end of the rod 11 passes in its revolutions into contact with the belt the rod will be forced inwardly to effect an intermittent rotation of the worm-shaft and a conse uent feeding of the paper-roll from the spoo 4 to the spool 5 across the hub of the pulley. Now if the force exerted upon the pulley is such that it will cause the pulley to advance in relation to the arm 1 against the tension of the contractile springs this movement by means of the bell-crank 18 and the connection of its arms with the stationary arm 1 and stylusholder 16 will impart to the latter a movement laterally to one side or the other, and thus make the desired record.

Having thus described this invention, 'what is claimed as new is- 1'. A.` dynamometer comprising an arm designed' to be secured to a shaft or the like, a pulley yieldingly connected to said arm, a stylus-holder and stylus mounted to oscillate Within the pulley, a bell-crank lever carried by the pulley, linkshaving a universal-joint connection with the arms of said lever and with said first-named arm and stylus-holder respectively, whereby the vari ation in the osition of .the first-named arm and the pulley will effect a movement of the stylus-holder, and means for feeding a record-sheet across the st lus in a direction at ri ht angles to the line of movement of the stylgus-holder.

2. A dynamometer comprising an arm designed to be secured to a shaft or the like, a pulley designed to assume different positions with relation to said arm, an oscillating st lus-holder mounted within the pulley, a beilcrank lever carried by the pulley, links connected toA the 'arms of said lever, the firstnamed arm and stylus-holder respectively, whereb a chan e in the relative position of the puliey and t e first-named arm will rock said lever and effect an oscillation of thetylus-holder, and means for intermittently feed- A ing a record-sheet across the stylus in a direction at right angles to the line of oscillation.

3. A dynamometer comprising an arm designed to be secured to a shaft or the like, a pulley yieldin ly connected to said arm, a stylus-holdingar ivotall suspended Within the pulley, a bel -crank ever fulcrumed to a spoke of the pulley and provided with two vangularly-projecting arms, links pivotally connecting the arms of said lever with the first-named arm and stylus-holding bar res ectively, and means for feedin a recordsiieet across the path of said sty us-holdin bar in a direction at right angles to the lineo oscillation thereof. f

4. A dynamometer com rising an arm designed to be secured to a s aft or the like, a pulley encircling said arm, contractile springs yieldin ly connecting the ends of said arm with t ev pulley at diametrically opposite points of the latter, a pivotally-suspended stylus-holding bar mounted in the pulley, a bell-crank lever fulcrumed on the ulley and having a link connection with the rst-named arm and bar respectively, 'spools carried by the pulley at opposite sides of the hub thereof, a paper stri designed to extend from one spool to the ot er and bear upon the face of said hub, and means for intermittently feeding said paper over said hub, for the purpose set forth.

5. A dynamometer comprising an arm designed tobe secured to a shaft or the like,

a pulley yieldingly connected to said arm and designed to assume different advanced positions` with rr i "on thereto, an oscillating stylus-holdi mounted on said pulley, a bell-crank carried by said lpulley, links connecting said heil-crank wit the first-named arm and stylus-holdin bar respectively, spools carried by said pul e and desi ned to receive a record-strip, one o said s oo s being provided with a gear, a worm-sha t mounted 1n a bearin on the pulley and provided at one end wit a worm meshing with said gear and at its o posite end with a ratchet, and a longitudina l -movable rod 11 mounted in bearings on t 1e pulley with its end protruding through the rim thereof, said rod carrying a pawl 10 meshing with. said ratchet, as and for the purpose set forth.

In testimony whereof I, WALTER H. RUD- DICK, administrator of the estate of HAMIL- TON RUDDICK, deceased, affix my signature in presence of two witnesses.

[n s] WALTER H. RUDDICK, Administrator of estate of Hamilton Rudd'ick,

deceased. Witnesses:

C. L. WINKLER, WILLIAM GORDEN. 

